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| Mirrors > Home > ILE Home > Th. List > fzo0dvdseq | GIF version | ||
| Description: Zero is the only one of the first 𝐴 nonnegative integers that is divisible by 𝐴. (Contributed by Stefan O'Rear, 6-Sep-2015.) |
| Ref | Expression |
|---|---|
| fzo0dvdseq | ⊢ (𝐵 ∈ (0..^𝐴) → (𝐴 ∥ 𝐵 ↔ 𝐵 = 0)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elfzolt2 10382 | . . . . . . 7 ⊢ (𝐵 ∈ (0..^𝐴) → 𝐵 < 𝐴) | |
| 2 | elfzoelz 10372 | . . . . . . . 8 ⊢ (𝐵 ∈ (0..^𝐴) → 𝐵 ∈ ℤ) | |
| 3 | elfzoel2 10371 | . . . . . . . 8 ⊢ (𝐵 ∈ (0..^𝐴) → 𝐴 ∈ ℤ) | |
| 4 | zltnle 9515 | . . . . . . . 8 ⊢ ((𝐵 ∈ ℤ ∧ 𝐴 ∈ ℤ) → (𝐵 < 𝐴 ↔ ¬ 𝐴 ≤ 𝐵)) | |
| 5 | 2, 3, 4 | syl2anc 411 | . . . . . . 7 ⊢ (𝐵 ∈ (0..^𝐴) → (𝐵 < 𝐴 ↔ ¬ 𝐴 ≤ 𝐵)) |
| 6 | 1, 5 | mpbid 147 | . . . . . 6 ⊢ (𝐵 ∈ (0..^𝐴) → ¬ 𝐴 ≤ 𝐵) |
| 7 | 6 | adantr 276 | . . . . 5 ⊢ ((𝐵 ∈ (0..^𝐴) ∧ 𝐴 ∥ 𝐵) → ¬ 𝐴 ≤ 𝐵) |
| 8 | 3 | adantr 276 | . . . . . . 7 ⊢ ((𝐵 ∈ (0..^𝐴) ∧ 𝐵 ≠ 0) → 𝐴 ∈ ℤ) |
| 9 | elfzonn0 10415 | . . . . . . . . . 10 ⊢ (𝐵 ∈ (0..^𝐴) → 𝐵 ∈ ℕ0) | |
| 10 | 9 | adantr 276 | . . . . . . . . 9 ⊢ ((𝐵 ∈ (0..^𝐴) ∧ 𝐵 ≠ 0) → 𝐵 ∈ ℕ0) |
| 11 | simpr 110 | . . . . . . . . 9 ⊢ ((𝐵 ∈ (0..^𝐴) ∧ 𝐵 ≠ 0) → 𝐵 ≠ 0) | |
| 12 | eldifsn 3798 | . . . . . . . . 9 ⊢ (𝐵 ∈ (ℕ0 ∖ {0}) ↔ (𝐵 ∈ ℕ0 ∧ 𝐵 ≠ 0)) | |
| 13 | 10, 11, 12 | sylanbrc 417 | . . . . . . . 8 ⊢ ((𝐵 ∈ (0..^𝐴) ∧ 𝐵 ≠ 0) → 𝐵 ∈ (ℕ0 ∖ {0})) |
| 14 | dfn2 9405 | . . . . . . . 8 ⊢ ℕ = (ℕ0 ∖ {0}) | |
| 15 | 13, 14 | eleqtrrdi 2323 | . . . . . . 7 ⊢ ((𝐵 ∈ (0..^𝐴) ∧ 𝐵 ≠ 0) → 𝐵 ∈ ℕ) |
| 16 | dvdsle 12395 | . . . . . . 7 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ ℕ) → (𝐴 ∥ 𝐵 → 𝐴 ≤ 𝐵)) | |
| 17 | 8, 15, 16 | syl2anc 411 | . . . . . 6 ⊢ ((𝐵 ∈ (0..^𝐴) ∧ 𝐵 ≠ 0) → (𝐴 ∥ 𝐵 → 𝐴 ≤ 𝐵)) |
| 18 | 17 | impancom 260 | . . . . 5 ⊢ ((𝐵 ∈ (0..^𝐴) ∧ 𝐴 ∥ 𝐵) → (𝐵 ≠ 0 → 𝐴 ≤ 𝐵)) |
| 19 | 7, 18 | mtod 667 | . . . 4 ⊢ ((𝐵 ∈ (0..^𝐴) ∧ 𝐴 ∥ 𝐵) → ¬ 𝐵 ≠ 0) |
| 20 | 0z 9480 | . . . . . . . 8 ⊢ 0 ∈ ℤ | |
| 21 | zdceq 9545 | . . . . . . . 8 ⊢ ((𝐵 ∈ ℤ ∧ 0 ∈ ℤ) → DECID 𝐵 = 0) | |
| 22 | 20, 21 | mpan2 425 | . . . . . . 7 ⊢ (𝐵 ∈ ℤ → DECID 𝐵 = 0) |
| 23 | nnedc 2405 | . . . . . . 7 ⊢ (DECID 𝐵 = 0 → (¬ 𝐵 ≠ 0 ↔ 𝐵 = 0)) | |
| 24 | 22, 23 | syl 14 | . . . . . 6 ⊢ (𝐵 ∈ ℤ → (¬ 𝐵 ≠ 0 ↔ 𝐵 = 0)) |
| 25 | 2, 24 | syl 14 | . . . . 5 ⊢ (𝐵 ∈ (0..^𝐴) → (¬ 𝐵 ≠ 0 ↔ 𝐵 = 0)) |
| 26 | 25 | adantr 276 | . . . 4 ⊢ ((𝐵 ∈ (0..^𝐴) ∧ 𝐴 ∥ 𝐵) → (¬ 𝐵 ≠ 0 ↔ 𝐵 = 0)) |
| 27 | 19, 26 | mpbid 147 | . . 3 ⊢ ((𝐵 ∈ (0..^𝐴) ∧ 𝐴 ∥ 𝐵) → 𝐵 = 0) |
| 28 | 27 | ex 115 | . 2 ⊢ (𝐵 ∈ (0..^𝐴) → (𝐴 ∥ 𝐵 → 𝐵 = 0)) |
| 29 | dvds0 12357 | . . . 4 ⊢ (𝐴 ∈ ℤ → 𝐴 ∥ 0) | |
| 30 | 3, 29 | syl 14 | . . 3 ⊢ (𝐵 ∈ (0..^𝐴) → 𝐴 ∥ 0) |
| 31 | breq2 4090 | . . 3 ⊢ (𝐵 = 0 → (𝐴 ∥ 𝐵 ↔ 𝐴 ∥ 0)) | |
| 32 | 30, 31 | syl5ibrcom 157 | . 2 ⊢ (𝐵 ∈ (0..^𝐴) → (𝐵 = 0 → 𝐴 ∥ 𝐵)) |
| 33 | 28, 32 | impbid 129 | 1 ⊢ (𝐵 ∈ (0..^𝐴) → (𝐴 ∥ 𝐵 ↔ 𝐵 = 0)) |
| Colors of variables: wff set class |
| Syntax hints: ¬ wn 3 → wi 4 ∧ wa 104 ↔ wb 105 DECID wdc 839 = wceq 1395 ∈ wcel 2200 ≠ wne 2400 ∖ cdif 3195 {csn 3667 class class class wbr 4086 (class class class)co 6013 0cc0 8022 < clt 8204 ≤ cle 8205 ℕcn 9133 ℕ0cn0 9392 ℤcz 9469 ..^cfzo 10367 ∥ cdvds 12338 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 617 ax-in2 618 ax-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-13 2202 ax-14 2203 ax-ext 2211 ax-sep 4205 ax-pow 4262 ax-pr 4297 ax-un 4528 ax-setind 4633 ax-cnex 8113 ax-resscn 8114 ax-1cn 8115 ax-1re 8116 ax-icn 8117 ax-addcl 8118 ax-addrcl 8119 ax-mulcl 8120 ax-mulrcl 8121 ax-addcom 8122 ax-mulcom 8123 ax-addass 8124 ax-mulass 8125 ax-distr 8126 ax-i2m1 8127 ax-0lt1 8128 ax-1rid 8129 ax-0id 8130 ax-rnegex 8131 ax-precex 8132 ax-cnre 8133 ax-pre-ltirr 8134 ax-pre-ltwlin 8135 ax-pre-lttrn 8136 ax-pre-apti 8137 ax-pre-ltadd 8138 ax-pre-mulgt0 8139 ax-pre-mulext 8140 |
| This theorem depends on definitions: df-bi 117 df-dc 840 df-3or 1003 df-3an 1004 df-tru 1398 df-fal 1401 df-nf 1507 df-sb 1809 df-eu 2080 df-mo 2081 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ne 2401 df-nel 2496 df-ral 2513 df-rex 2514 df-reu 2515 df-rmo 2516 df-rab 2517 df-v 2802 df-sbc 3030 df-csb 3126 df-dif 3200 df-un 3202 df-in 3204 df-ss 3211 df-nul 3493 df-pw 3652 df-sn 3673 df-pr 3674 df-op 3676 df-uni 3892 df-int 3927 df-iun 3970 df-br 4087 df-opab 4149 df-mpt 4150 df-id 4388 df-po 4391 df-iso 4392 df-xp 4729 df-rel 4730 df-cnv 4731 df-co 4732 df-dm 4733 df-rn 4734 df-res 4735 df-ima 4736 df-iota 5284 df-fun 5326 df-fn 5327 df-f 5328 df-fv 5332 df-riota 5966 df-ov 6016 df-oprab 6017 df-mpo 6018 df-1st 6298 df-2nd 6299 df-pnf 8206 df-mnf 8207 df-xr 8208 df-ltxr 8209 df-le 8210 df-sub 8342 df-neg 8343 df-reap 8745 df-ap 8752 df-div 8843 df-inn 9134 df-n0 9393 df-z 9470 df-uz 9746 df-q 9844 df-fz 10234 df-fzo 10368 df-dvds 12339 |
| This theorem is referenced by: fzocongeq 12409 |
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